Sex is usually way overrated. Most guys, especially under 25-30 have no idea what they're doing so tell you the truth, you probably won't enjoy it much anyway.
This may be embarrassing but I'd say experiment by yourself. It won't seem as scary and you'll be able to steer the guy the right way when you do have sex.
Btw, I bet you some of those friends who are claiming they had/are having sex are still virgins. So don't just go and have sex with someone random to "fit in". You don't want to regret your first time like many girls do